The Hindu/Indian system of examining compatibility based on horoscopes of the aspirant couple is unique. The fundamental concept of matching horoscopes emanates from constellations occupied by the Ascendant/Lagna (Lagna) at the time of births of bride and bridegroom. Individuals inherit qualities of the birth constellation. Various constellations represent different nature in respect of their casts, animals presented by them, sex, Gana (God/man/demon), humour, birds ruled, primordial elements, Gotra, directions ruled, consonants and vowels, mutual harmony and repulsion with certain stars, beneficence to the other stars by virtue of mutual distance etc.